CVE-2026-71847
Gravedad CVSS v4.0:
ALTA
Tipo:
CWE-416
Utilización después de liberación
Fecha de publicación:
07/08/2026
Última modificación:
07/08/2026
Descripción
*** Pendiente de traducción *** Ruby JSON is a JSON implementation for Ruby. From 2.20.0 until 2.21.2, Ruby's JSON native C extension clears the consumed JSON::ResumableParser input buffer but leaves state.start, state.cursor, and state.end pointing into released storage. When partial_value reconstructs an incomplete object containing duplicate keys, the duplicate-key warning path calls cursor_position, which dereferences those stale pointers. This results in a heap-use-after-free and can terminate the Ruby process. An attacker who can supply JSON stream data to an application using JSON::ResumableParser may cause process termination when the application calls partial_value on incomplete attacker-controlled input containing duplicate object keys. This issue has been fixed in version 2.21.2.
Impacto
Puntuación base 4.0
8.70
Gravedad 4.0
ALTA